Critically acclaimed Mexican director Alejandro González Iñárritu‘s second collaboration with Guillermo Arriaga, 21 Grams, is now available for free on Hulu. The film tells three stories starring Sean Penn, Naomi Watts, Benicio Del Toro, Danny Huston, and Charlotte Gainsbourg. Not nearly as great as his debut feature Amores Perros, 21 Grams is still worth checking out. Leave your comments about the movie in the comments.